Using Paypal Sandbox to Test Your Application
I recently set the Paypal payment standard in my web app and everything works fine. I can use the Paypal sandbox for testing and everything works as I expect.
However, I would like to send the app to my beta testers and let them test payments without actually using their Paypal or credit cards. I can create sandbox sellers and sandbox recipients, but that's not really the case. My button sends them to sandbox.paypal.com ... but when they get there, they are asked to log in with a developer / sandbox password. It doesn't just allow them to sign in with the payee's account.
I can work around this, but I wanted to see if something was missing.
a source to share
I did not consider this type of situation the way we intended for using a sandbox. Every sandbox account is tied to a developer account, so there is no way around this.
You can test your device or sandbox your app and get live to get your customers started using it. There was no plan for your customers to sandbox payment testing.
a source to share